# The Weights and Measures (Local and Working Standard Capacity Measures and Testing Equipment) Regulations 1987, Regulation 5: Reference meters


(1) Reference meters shall be tested either—
(a) by means of a local or working standard capacity measure which is of sufficient size to hold at least one minute’s delivery of the meter under test; or
(b) by means of a weighing machine which can weigh at least one minute’s delivery of the meter under test.
(2) The capacity measure or the weighing machine used to test a reference meter shall have a discrimination threshold of not less than 0.01 per cent. of the quantity delivered by the meter under test.
In a test under paragraph (1)(b) above, the density of the test liquid shall be determined to an accuracy of 0.01 per cent.

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Source: https://www.legislation.gov.uk/uksi/1987/51/regulation/5 (the official version)
Page: https://openlegislation.uk/weights-and-measures-local-and-working-standard-capacity-measures-and-testing-equipment-regulations-1987/regulation-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.